Drying apparatus



Oct. 15, 1929. o. R. WOLF 1,731,603

- DRYING APPARATUS Filed June '7. 1926 4Sheets-Sheet l W m H Oct. 15,1929. o. R. WOLF 1,731,603

DRYING APPARATUS Filed June 7. 1926 4'Sheets-Sheet 2 iii; mjiil m1! W M!I!!! M W I k Oct. 15, 1929. Q, R, WOLF 1,731,603

DRYING APPARATUS Filed Juno 7. 1926 4 Sheets-Sheet 3 Oct. 15, 1929. o.R. WOLF DRYING APPARATUS Filed June 7. 1926 4 Sheets-Sheet 4 fig J Ii IIn I Patented Oct. 15, 1929 UNITE STATES PATENT o OTI'O RICHARD WOLF, OFRIVER FOREST, ILLINOIS, ASSIGNORTO iT'IIE TRIBUNE GOM- IPANY, OF CHICAGOILLINOIS,

A CORPORATION OF ILLINOIS DRYING APPARATUS Application filed June 7,

This invention relates to drying machines and has for its primary objectthe provision of a machine particularly adaptedfor drying pigment paperwhich is used for carbon prints in the process of printing in intaglio,or by means of coppercylinders in which the characters are formedbeneath the surfacethrough the action of acid passing through thepigment paper which is applied to the cylinders, and which has beenrendered variably resistant to acid by varied exposure to lightconformable to the'picture or other characters to be printed.

In order that absolutely uniform results may be obtained, it-ishighlydesirable-that the pigment paper (which, as ordinarily used, has agelatin coating) should be uniformly dried after. being treated torender sensit ve to light, such sensitizing treatmentinvolving thepassing of the sheets through aibath of appropriate solution, and myinvention contemplates the provision of a machine adapted todry allparts of the sheets simultaneously and in controlled manner to the endthat a high degree of uniformity mayresult.

Another object of the invention isthe provision of a machine suited tothis purpose which is simple in construction and-operation and iscapable of economical manufacture and use.

-Numerous other objects and advantages of the invention will be apparentas it is better understood from the following description, which, takenin connection with the accompanying drawings disclosespreferred'embodiment thereof. I

Referring .to thedrawings, Figure 1 isanelevational View ofadryer unitconsisting of two drums and associated driving mechanism mounted on asingle frame;

Fig.2:is a top :planand horizontal sectional viewthereof;

' ;Fig.;3'-is an end elevation, looking toward thei'left in Fig. l; I

Fig. 4: is .anenlarged view of one of the s-ides of a drum, partiallybroken away and showing in detail the clamping devices for the ferrotypeplates; and

1926. Serial No. 114,165.

Fig. 5 is a sectional view, taken substantially on the section lines 5-5in Fig. 4 7

Upon said drawings, illustrating the :best manner in which Ihave thusfar contemplated applying the principles of my invention, the referencecharacter 11 indicates a base having uprights 12 at the opposite endsthereof supporting a bed 13 upon which theoperating elements of themachine are mounted. Standards 14, arising from "the opposite ends ofsaid bed, support adjustable journal boxes 15, in which a'longitudina'lshaft 16 has bearings, a central standard 17 being in the presentinstance provided-on the bed .13 to support the shaft at the center,said upright being disposed between'two aligned rectangular frames orcarriers .18, which areiden'tical in structure and of which, therefore,only one need be described .indetail. fSaid drums comprise end members19, to which slats 21 are secured *in any desired'manner,said'endmembers and slats being made of wood, in the present embodiment, andmetal plates=22 being secured exteriorly 'to the end members and in turnsecuredto the shaft 16,,w'hich, as shown, is divided centrally, asclearly indicated "inFig. 2 of the drawings.

A pulley 23 is-mounted on "theinner end of each shaft section 16 and isconnected by means of a belt 24 with a pulley 25 on a short shaft 26,which is journaled in a bearing 27 and carriesa worm wheel 28 enclosedin a casing '29, said worm wheel being driven by a worm 31 carried on ashaft 32, jourrialed in bearings 33 in the frame anddispose'd at rightangles to the shaft 26. Said'shaft 32 carries at its outer end-a pulley33, driven by means of a belt 34, taking over a pulley 35 ona shaft/36of amotor 37, having a frame part 38 secured to-the bed IS-bybolts 89,said motor being of any suitable or preferred type and the operationthereof being controllable by means of a suitably located switch (notshown).

Referring now in detail to Figs. 4 and 5, the means for mounting thepigment paper on the sides of the carrier will-be described. The sheetto be dried,whichisfindicated by the reference, character 41, is placedupon a ferrotypeplate 12 insuch'manneras'to cause it to adhere theretoand the plate is then arranged upon a side of the carrier, the latterbeing provided at the lower side with sheet metal guides 43 secured byscrews 44 to an abutment 45 at the bottom of the carrier side,considering the latter as disposed in the position shown in thedrawings. Said guides are of angular formation with respect to the faceof the carrier to facilitate the positioning of the plates, which may bemoved in endwise and toward the right, viewing Fig. 4, to positionbeneath the clamping devices, to be presently described, and then movedto the left to the final position shown. For the purpose of releasablyattaching the plates and adhering sheets to the sides of the carrier, Iemploy clamping devices at the corners of each side of said carrier,comprising a fixed plate 46 secured to an edge block 47, a spring member48 being secured between said blocks and projecting inwardly therefrom,said member having a rubber contact piece 49 secured to the outer endthereof by means of a rivet 51, said contact piece being cup-shaped andthe inner end of said rivet being disposed in the depression 52 thereof.A cam' 53 is mounted on a cross pin 54 carried by ears 54 formed on theblock 46, said cam being provided with a handle 55. When the handle 55is arranged in the projecting position shown in full lines in Fig.

5, the cam permits the spring member 48 to assume the normal full lineposition shown in said Fig. 5 and the movement of said handle to thedotted line position after the ferrotype plate has been positionedcauses said cam to move said spring member 48 inwardly to the dottedline position of Fig. 5, thereby clamping the ferrotype plate tigh ly tothe side of the carrier. After the plates have thus been positioned, themotor may be started by pressing a button conveniently located and thecarrier will begin to revolve, causing the different portions of thesheet to be subjected, during the rotation of the carrier, to all dryingconditions to which any part thereof is subject, thus producing uniformand rapid drying, which may be has 'tened by the use of suitably locatedfans (not shown) if desired.

The frames or carriers 18 may be arranged in pairs, as shown in thedrawings, or in any desired number and relationship and could, ifdesired, be mounted for operationv by a single source of power, separatedriving means, however, being shown in the present instance andobviously providing for greater flexibility of use of the apparatus.

It is thought that the invention and many of its attendant advantageswill be understood froin the foregoing description, and it will beapparent that various changes may be made in the form, construction andarrangement of the parts, without departing from the spirit and scope ofthe invention,

or sacrificing all of its material advantages, the form hereinbeforedescribed being merely a preferred embodiment thereof.

I claim:

1. A machine for drying pigment paper used in the process of intaglioprinting, comprising a horizontally disposed shaft, a carrier mounted onsaid shaft and adapted to carry sheets of said paper suitably mounted onferrotype plates or other lightexcluding supports, means for securing aplurality of said plates independently to the exterior of said carrierwithout perforating the sheets, said means being adapted to press theplate against the carrier, and means for rotating said carrier.

2. A machine for drying pigment paper used in the process of intaglioprinting, comprising a horizontally disposed shaft, a polygonal carriermounted 011 said shaft and adapted to carry sheets of said papersuitably mounted on ferrotype plates or otherv light excluding supports,means for securing aplurality of said plates independently to theexterior of said carrier without perforating the sheets, said meansbeing adapted to press the plates against the carrier, and means forrotating said carrier.

3. A machine for drying pigment paper used in the process of intaglioprinting, comprising a rotatable carrier mounted on a horizontal axis,means for releasably securing a plurality of separate sheets of pigmentpaper to the exterior of a wall of said carrier without perforating thesheets and with the same exposed and in position to be uniformlyaffected by atmospheric conditions during rotation of the carrier, saidmeans being adapted to press the plates against the carrier, and meansfor rotating the carrier.

4. A machine for drying pigment paper used in the process of intaglioprinting; comprising a rotatable carrier mounted on a horizontal axis,means for releasably securlng sheets of pigment paper to a wall of saidcarrier with the sameexposed and in position to be uniformly affected byatmospheric conditions during rotation of the carrier, and means forrotating the carrier, said securing means comprising spring clamps andmanually operable cams for moving the same into clamping position.

5. A machine for'drying pigment paper used inthe process of intaglioprinting, comprising a rotatable carrier mounted on a horizontal axis,means for releasably securing sheets of pigment paper to a wall of saidcarrier with the same exposed and in position to be uniformly affectedby atmospheric conditions during rotation of the carrier, and means forrotating the carrier, said securing means comprisingspring clampsarranged at the corners of said wall and normally spaced therefrom andmanually operable cams for moving the same into clamping position.

6. A machine for drying pigment paper used in the process of intaglioprinting, comprising a rectangular carrier mounted for r0- tation on ahorizontal axis, controllable means for driving said carrier, andindependent means for releasably and yieldingly clamping sheets ofpigment paper to each of the four sides of said carrier, with each ofsaid sheets arranged in fiat condition on one side only of the carrier,rotation of the carrier serving to subject the entire surface of eachsheet to the same drying conditions thereby drying the same uniformlythroughout and speeding the drying action by successively presentingeach complete sheet to the perhaps differing atmospheric conditionsprevailing at different points in the periphery of the carrier.

7. A machine for drying pigment paper used in the process of intaglioprinting, comprising a horizontally disposed shaft, a carrier mounted onsaid shaft and adapted'to carry sheets of said paper suitably mounted onferrotype plates or other light excluding supports, means for yieldinglyclamping said plates With pigment paper thereon to the exterior of saidcarrier, means for rotating said carrier, and angular guides on saidcarrier for facilitating'the positioning of said plates.

8. A machine for drying pigment paper used in the process of intaglioprinting, comprising a frame, a plurality of uprights on said frame, ahorizontal shaft having bearings in said uprights, a polygonal carriersecured to said shaft, means for rotating the shaft, and means on eachof the sides of said carrier for clamping thereto a separate sheet ofsaid pigment paper suitably mounted on ferrotype plates or other lightexcluding supports, the movement of said sheets through the atmosphereduring rotation of said carrier tending to hasten the drying action andto subject each sheet and all parts thereof to the same atmosphericconditions, thereby combination of a revoluble supporting structure andmeans for clamping ferrotype plates having pigment sheets appliedthereto to an exterior part of said revoluble supporting structure, saidmeans exerting pressure upon the pigment sheet to hold the same to theferrotype plate When the sheet is dry.

11. In a machine for drying pigment paper used' in the process ofintaglio printing, the combination of a revoluble sup-porting structureand means for clamping ferrotype plates having pigment sheet appliedthereto to an exterior part of said revoluble supporting structure inmanner to hold the pigment sheet to the ferrotype plate When the sheetis dry, said clamping means including a contact member of soft materialadapted to be pressed against the pigment sheet Without damage to thelatter.

12 In a machine for drying pigment paper used in the process of intaglioprinting, the combination of a carrier providing exterior surface areasto Which plates carrying sheets of pigment paper in flat condition maybe secured, means for clamping said plates to said carrier, said meansserving also to clamp the sheet upon the plate to prevent buckling ofthe sheet, and means for rapidly rotating said carrier to dry thesheets.

In Witness whereof, I hereunto subscribe my name to this specification.

OTTO RICHARD WOLF.

drying the same uniformly throughout and in minimum time.

9. A machine for drying pigment paper used in the process of intaglioprinting, comprising a frame, a plurality of uprights on said frame, ahorizontal shaft. having bearings in said uprights, a polygonal carriersecured to said shaft, means comprising a motor mounted on said frameand driving connections for rotating the shaft, and means on each of thesides of said carrier for clamping thereto a separate sheet of saidpigment paper suitably mounted on ferrotype plates or other lightexcluding supports, the movement of said sheets through the atmosphereduring rotation of said drum tending to hasten the drying action and tosubject each sheet and all parts thereof to the same atmosphericconditions, thereby drying the same uniformly throughout and in minimumtime.

10. In a machine for drying pigment paper used in the process ofintaglio printing, the

